213816241 has 2 divisors, whose sum is σ = 213816242. Its totient is φ = 213816240.

The previous prime is 213816209. The next prime is 213816277. The reversal of 213816241 is 142618312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147865600 + 65950641 = 12160^2 + 8121^2 .

It is a cyclic number.

It is not a de Polignac number, because 213816241 - 2⁵ = 213816209 is a prime.

It is not a weakly prime, because it can be changed into another prime (213819241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106908120 + 106908121.

It is an arithmetic number, because the mean of its divisors is an integer number (106908121).

Almost surely, 2^213816241 is an apocalyptic number.

It is an amenable number.

213816241 is a deficient number, since it is larger than the sum of its proper divisors (1).

213816241 is an equidigital number, since it uses as much as digits as its factorization.

213816241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 213816241 is about 14622.4567361302. The cubic root of 213816241 is about 597.9711482596.

The spelling of 213816241 in words is "two hundred thirteen million, eight hundred sixteen thousand, two hundred forty-one".